Inventor
IIMURA HARUO
JP31 patents
⚠️ This page may combine multiple inventors who share the name “IIMURA HARUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
13 patentsUS5016988AMay 21, 1991
Liquid crystal display device with a birefringent compensator
RICOH KK154 citations99
US5380459AJan 10, 1995
Liquid crystal display device with improved viewing angle dependence of color
RICOH KK62 citations96
US5250214AOct 5, 1993
Liquid crystal color display device provided with a color filter film and an optical phase plate comprising liquid crystal polymer
RICOH KK88 citations96
US6284424B1Sep 4, 2001
Electrophotographic toner and image forming method and apparatus using the toner
RICOH KK33 citations92
US5243451ASep 7, 1993
DAP type liquid crystal device with cholesteric liquid crystal birefringent layer
RICOH KK35 citations92
US5184237AFeb 2, 1993
Super-twisted nematic type liquid crystal display device
RICOH KK47 citations92
US5175638ADec 29, 1992
ECB type liquid crystal display device having birefringent layer with equal refractive indexes in the thickness and plane directions
RICOH KK48 citations92
US5150237ASep 22, 1992
Liquid crystal display element
RICOH KK38 citations92
US5056896AOct 15, 1991
Liquid crystal display device with dielectric anisotropy
RICOH KK36 citations92
US4984873AJan 15, 1991
Liquid crystal display device
RICOH KK55 citations92
US7662530B2Feb 16, 2010
Image forming apparatus and image forming method
RICOH KK12 citations84
US4818074AApr 4, 1989
Projection device for irradiating a light to a display device and optically magnifying and projecting a reflection light therefrom
RICOH KK19 citations81
US5595852AJan 21, 1997
Organosilicon compound, producing method thereof and toner and dry-type developer using the same
RICOH KK14 citations73
RICOH CO LTD
4 patentsUS8045875B2Oct 25, 2011
Image forming apparatus and image forming method capable of generating stable transfer electric field
RICOH CO LTD8 citations84
USRE47726ENov 12, 2019
Image forming apparatus
RICOH CO LTD0 citations52
US10088781B2Oct 2, 2018
Image forming apparatus and image forming method
RICOH CO LTD0 citations52
US9563153B2Feb 7, 2017
Image forming apparatus and image forming method
RICOH CO LTD0 citations52
SUGIMOTO NAOMI
4 patentsUS8712267B2Apr 29, 2014
Image forming apparatus and image forming method
SUGIMOTO NAOMI7 citations83
US9081335B2Jul 14, 2015
Transfer device with transfer voltage unit and image forming apparatus using the same
SUGIMOTO NAOMI2 citations62
US9335674B2May 10, 2016
Transfer device with transfer voltage unit and image forming apparatus using the same
SUGIMOTO NAOMI0 citations51
US9285723B2Mar 15, 2016
Image forming apparatus and image forming method
SUGIMOTO NAOMI0 citations51
NAKAMURA KEIGO
3 patentsUS8923716B2Dec 30, 2014
Transfer device, image forming apparatus, and transfer method
NAKAMURA KEIGO7 citations84
US8750736B2Jun 10, 2014
Image forming apparatus for obtaining good image quality over time
NAKAMURA KEIGO6 citations73
US9658579B2May 23, 2017
Image forming apparatus including a transfer bias output device
NAKAMURA KEIGO0 citations42